Forces

What is the unit of force?

• Newton, N

• Centimetre, cm

• Kilometre, km

• kilogram, kg

Which of the following is frictional force a nuisance?

• Car braking when at a traffic light junction.

• Slowing down a motorcycle during a traffic jam.

• Wear and tear of your school shoes.

• Running with a pair of track shoes on a rainy day.

Which of the following is correct?

• The box will move with a force of 2N to the right.

• The box will move with a force of 2N to the left.

• The box will move with a force of 8N to the right.

• The box will move with a force of 8N to the left.

Which of the following is a non-contact force.

• Magnetic force

• Friction between brakes and wheels

• Pull a bag

• Pushing open a door.

Convert the following.

12m = _______cm

• 120 cm

• 1200 cm

• 12 cm

• 1.2 cm

Which of the following formula involving speed, distance and time is correct?

• Speed = distance/time

• Speed = time/distance

• Time = speed x distance

• Time = speed/time

What is the unit of acceleration?

• m/s

• m/s²

• km/h

• km/s

In which of the following is the least amount of force required to lift the load?

• 
• 
• 
• 

Convert the following.

1500 m = ________ km

• 15 km

• 1.5 km

• 0.15 km

• 150 km

Which of the following can be used to measure time?

• Stopwatch

• Ruler

• Measuring tape

• Electronic balance